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Rename downcast to try_cast and add cast for Dynamic.

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Stephen Chung
2020-04-02 12:35:44 +08:00
parent c4a51b1390
commit 5e7c9b47d5
6 changed files with 169 additions and 115 deletions
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28
tests/maps.rs
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@@ -73,14 +73,14 @@ fn test_map_indexing() -> Result<(), EvalAltResult> {
fn test_map_assign() -> Result<(), EvalAltResult> {
let mut engine = Engine::new();
let x = engine.eval::<Map>(r#"let x = #{a: 1, b: true, "c#": "hello"}; x"#)?;
let a = x.get("a").cloned().unwrap();
let b = x.get("b").cloned().unwrap();
let c = x.get("c#").cloned().unwrap();
let x = engine.eval::<Map>(r#"let x = #{a: 1, b: true, "c$": "hello"}; x"#)?;
let a = x.get("a").cloned().expect("should have property a");
let b = x.get("b").cloned().expect("should have property b");
let c = x.get("c$").cloned().expect("should have property c$");
assert_eq!(*a.downcast::<INT>().unwrap(), 1);
assert_eq!(*b.downcast::<bool>().unwrap(), true);
assert_eq!(*c.downcast::<String>().unwrap(), "hello");
assert_eq!(a.cast::<INT>(), 1);
assert_eq!(b.cast::<bool>(), true);
assert_eq!(c.cast::<String>(), "hello");
Ok(())
}
@@ -89,14 +89,14 @@ fn test_map_assign() -> Result<(), EvalAltResult> {
fn test_map_return() -> Result<(), EvalAltResult> {
let mut engine = Engine::new();
let x = engine.eval::<Map>(r#"#{a: 1, b: true, c: "hello"}"#)?;
let a = x.get("a").cloned().unwrap();
let b = x.get("b").cloned().unwrap();
let c = x.get("c").cloned().unwrap();
let x = engine.eval::<Map>(r#"#{a: 1, b: true, "c$": "hello"}"#)?;
let a = x.get("a").cloned().expect("should have property a");
let b = x.get("b").cloned().expect("should have property b");
let c = x.get("c$").cloned().expect("should have property c$");
assert_eq!(*a.downcast::<INT>().unwrap(), 1);
assert_eq!(*b.downcast::<bool>().unwrap(), true);
assert_eq!(*c.downcast::<String>().unwrap(), "hello");
assert_eq!(a.cast::<INT>(), 1);
assert_eq!(b.cast::<bool>(), true);
assert_eq!(c.cast::<String>(), "hello");
Ok(())
}